chore(build): upgrate to node 12 and gulp 4

circle.yml

@@ -3,7 +3,7 @@ jobs:
   build:
     working_directory: ~/ionic-native/
     docker:
-      - image: node:10
+      - image: node:12
     steps:
       - checkout
       - restore_cache:

gulpfile.js

@@ -16,7 +16,7 @@ const flagConfig = {
   flags = minimist(process.argv.slice(2), flagConfig);
 
 /* Docs tasks */
-require('./scripts/docs/gulp-tasks')(gulp, flags);
+require('./scripts/docs/gulp-tasks').default(gulp, flags);
 
 gulp.task('lint', () => {
   return gulp

package.json

@@ -31,7 +31,7 @@
     "@types/fs-extra": "^8.0.0",
     "@types/jest": "^24.0.15",
     "@types/lodash": "^4.14.136",
-    "@types/node": "^10.14.12",
+    "@types/node": "^12.6.2",
     "@types/rimraf": "^2.0.2",
     "@types/webpack": "^4.4.34",
     "ajv": "^6.10.1",
@@ -41,7 +41,7 @@
     "dgeni": "^0.4.12",
     "dgeni-packages": "0.16.10",
     "fs-extra": "^8.1.0",
-    "gulp": "3.9.1",
+    "gulp": "^4.0.2",
     "gulp-rename": "^1.4.0",
     "gulp-replace": "^1.0.0",
     "gulp-tslint": "^8.1.4",

scripts/docs/gulp-tasks.js

@@ -6,35 +6,27 @@ const config = require('./config.json'),
   Dgeni = require('dgeni');
 
 module.exports = gulp => {
-  gulp.task('docs', [], () => {
+  gulp.task('docs', () => {
     try {
-      const ionicPackage = require('./dgeni/dgeni-config')(
-          projectPackage.version
-        ),
+      const ionicPackage = require('./dgeni/dgeni-config')(projectPackage.version),
         dgeni = new Dgeni([ionicPackage]);
 
-      return dgeni
-        .generate()
-        .then(docs => console.log(docs.length + ' docs generated'));
+      return dgeni.generate().then(docs => console.log(docs.length + ' docs generated'));
     } catch (err) {
       console.log(err.stack);
     }
   });
 
-  gulp.task('readmes', [], function() {
+  gulp.task('readmes', () => {
     fs.copySync(
       path.resolve(__dirname, '..', '..', 'README.md'),
       path.resolve(__dirname, '..', '..', config.pluginDir, 'core', 'README.md')
     );
 
     try {
-      const ionicPackage = require('./dgeni/dgeni-readmes-config')(
-          projectPackage.version
-        ),
+      const ionicPackage = require('./dgeni/dgeni-readmes-config')(projectPackage.version),
         dgeni = new Dgeni([ionicPackage]);
-      return dgeni
-        .generate()
-        .then(docs => console.log(docs.length + ' README files generated'));
+      return dgeni.generate().then(docs => console.log(docs.length + ' README files generated'));
     } catch (err) {
       console.log(err.stack);
     }